efi_loader: Add guidcpy function

Add guidcpy function to copy the source guid to the destination
guid. Use this function instead of memcpy for copying to the
destination guid.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Use void * instead of efi_guid_t * for arguments to allow copying unaligned
GUIDs. The GUIDs of configuration tables are __packed.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 4d401f6..e1c9b1f 100644 (file)
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -17,6 +17,11 @@ static inline int guidcmp(const void *g1, const void *g2)
        return memcmp(g1, g2, sizeof(efi_guid_t));
 }
 
+static inline void *guidcpy(void *dst, const void *src)
+{
+       return memcpy(dst, src, sizeof(efi_guid_t));
+}
+
 /* No need for efi loader support in SPL */
 #if CONFIG_IS_ENABLED(EFI_LOADER)
 

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 88a7604..3103a50 100644 (file)
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1401,7 +1401,7 @@ static efi_status_t EFIAPI efi_register_protocol_notify(
        }
 
        item->event = event;
-       memcpy(&item->protocol, protocol, sizeof(efi_guid_t));
+       guidcpy(&item->protocol, protocol);
        INIT_LIST_HEAD(&item->handles);
 
        list_add_tail(&item->link, &efi_register_notify_events);
@@ -1632,7 +1632,7 @@ efi_status_t efi_install_configuration_table(const efi_guid_t *guid,
                return EFI_OUT_OF_RESOURCES;
 
        /* Add a new entry */
-       memcpy(&systab.tables[i].guid, guid, sizeof(*guid));
+       guidcpy(&systab.tables[i].guid, guid);
        systab.tables[i].table = table;
        systab.nr_tables = i + 1;